does anybody know if you have to buy certain tuning pegs (or machines, whatever they're called) for acoustic guitars, or can you use any of them, and what is the fret radius of a yamaha FG-335 II is.
Well...basically the dimensions of the tuners have to match up. Or should. The screw hole distances that is. But I mean...a lot of people just redrill. Looks a little tacky to me.

Don't know about the guitar. Google?
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Tuners are measure by the dia. of the tuning hole. measure it, then look at www.stewmac.com to find tuners that fit.

To the second question- no, sorry.
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